Calendar of Upcoming Events

This past year has been challenging for everyone. Dave has had the opportunity to present occasional online classes through various companies and organizations. The progress being made to get adults vaccinated has accelerated in recent weeks, and hopefully conferences and in-person seminars will resume in late summer or early fall, if not sooner.  As soon as we feel it is safe to respond to requests for in-person training, we will post them on this page.  Thank you for your interest.

Below are training events currently scheduled:


                          - Geodetic Datum Transformations

                                  **** This class requires online registration - follow the link for more information


                *****  Due to concerns and quarantine restrictions resulting from COVID-19, most       *****

                *****  events in the near future have been cancelled or postponed.  Please practice       *****

                *****  social distancing for your safety and the safety of those around you.                 *****




What people are saying about Dave and Base 9 Geodetic Consulting Services workshops:


  • "You are the Neil deGrasse Tyson of Surveying"

  • "Great speaker!! Very informed; please come back."

  • "Always learn new things from David Doyle.""

  • "A great speaker. Very knowledgeable and easy to listen to. Lots of good information."

  • "Extremely informative. Dave is always an excellent presenter."

  • "Would like to see this seminar each year to keep updated on NSRS."

  • "Invaluable presenter with wealth of knowledge and the wisdom to make understanding content easier."

  • "Instructor extremely informative and knowledgeable. Would recommend every surveyor take his class."

  • "This course should be repeated in future conferences."

  • "Good speaker and did not talk over our heads."

  • "Very experienced, based on 'real world' experience."




You can contact these organizations, who have hosted Base 9 Geodetic Consulting Services seminars, for references/reviews:

Texas Society of Professional Surveyors - November 2019

Maryland Society of Surveyors - October 2019

Vermont Society of Land Surveyors - September 2019

Arizona Professional Land Surveyors - May 2019

Nevada Association of Land Surveyors - March 2019

California Land Surveyors Association - March 2019

Tennessee Association of Professional Surveyors - March 2019

New Jersey Society of Professional Land Surveyors - February 2019

Professional Land Surveyors of Oregon - January 2019





Videos/recordings of Dave's seminars:

-- "Relationship of and transformations between most common reference frames used in the U.S."; January 30, 2015 

-- "Modernization of the National Spatial Reference System "; March 14, 2014

-- Fundamentals of Geodesy, November 14, 2014, 4:24

-- NGS Datasheets Tips, January 12, 2015, 3:59